Paper-board box



g- 9, 1932 J. E. PAGE ,&

PAPER 50m 301:

Filed Nov. '12. 1929 Patented Aug. 9, 1932 p Y mam-:1) sg' 'rEs PATENTOFFICE JOHN ERNEST PAGE, OF SYDNEY, AUSTRALIA, ASSIGNOR, BY IESNEASSIGNMENTS, TO THE GUARDIAN TRUST COMPANY, OF CLEVELAND, OHIO, ACORPORATION OF OHIO, TRUSTEE FOR GIBSON PATENT CONTAINERS, LTD-, ACORPORATION OF NEW. SOUTH WALES, AUSTRALIA PAPER-BOARD BOX Applicationfiled November 12, 1929, Serial No. 406,885, and in Australia April 19,1929.

This invention relates to paperboard boxes or containers for containingretail quantities of dried fruits, confectionery, and other products,and in particular it relates to boxes 5 in which interfitting butunattached bottom,

side, and top members of stiff paperboard are bound together inassembled relation by a Wrap of flexible film or fabric material which Eforms a close fitting envelope but is not glued or otherwise fixed tothe paperboard pieces.

Boxes made on this principle are economical for the packer, inasmuch asready cut sheets of paperboard and the wrap sheets may be kept in flatcondition during transport and .1 storage, thereby minimizing space, andthe container can be assembled complete in set-u form and ready forpacking with speed an facility.

In one known construction of such paperboard boxes a wrap sheet whichconsists of textile or gauze fabric or tough flexible paper orcellophane or like filmy material is stretched flat under one end of thestructure and is gathered up and pleated over the sides of thestructure, and its marginal portion is creased and pleated down flatover the top end of the structure; and fastening of the whole assemblyis effected by fixing an adhesive sticker or seal piece over theconverged edges of the wrap sheet.

Box bodies and lids heretofore have also been produced on a similarprinciple by assembling paperboard side and end pieces without fasteningthem together, drawing a wrap sheet about them, infolding the edges ofthe wrap sheet over the side pieces, and forcing a false end piece intothe body or the lid thus formed so as to flatten down and stretch theinfold of the wrap sheet against the interior face of the sides and tosecrete the edge portions of it under this false end piece. In

this type of construction the lid must be made larger in diameter thanthe body in order that it may be slipped over the body.

One of the objects of the present invention is to so modify the knownmethods of construction as to make it practicable to have the lidsidentical in size with the bottom end member, in order to facilitateproduction of both said parts in the same presses and with rim and endpaperboard parts of identical size and flexible wrap sheets of reducedsize for the bottom end member.

Another object of the present invention is to economize the area of thewrap sheets; the wrap sheets are the most costly element in thestructure; as in most cases material such as silk, or cellophane, or acostly paper is psel in order to procure a desirable finish ef- Thisinvention also comprehends a container having a bottom end member and acontinuous tubular member of paperboard material. The bottom end membermay comprise a side wall or rim portion and a bottom portion heldassembled together by a wrap sheet. The tubular member, which forms aportion of the body of the container, is forced into the bottom endmember and extends above the rim portion any distance convenient anddesirable to properly contain the contents. An oversize false bottominsert or piece of stiff paperboard material is forced into the tubularmember to bind the tubular member and bottom end member together infirm, set-up, assembly and without the use of glue, staples, or otherfastening means. The tubular member, expanded outwardly by the oversizeinsert piece, firmly clamps the inturned edge of the wrap sheet betweenthe tubular member and rim portion of the bottom end member. Thus therim portion and bottom portion of the bottom end member are alsosecurely bound together without the use of glue, staples or othersecuring means. My container can be manufactured at low cost since nogluing or stapling operation is necessary. The container is especiallyuseful in the packaging of dried fruits, confectionery and food productswhich are liable to become contaminated from glue, staples or similarsecuring materials.

The invention will be described with more particularly with reference tothe accompanying drawing, in which Fig. 1 is a perspective view of afive-sided container constructed according to the invention;

Fig. 2 is an exploded view showing the various parts of the container, Abeing the false bottom or insert piece, 13 the side liner or tubularmember, C the bottom rim portion,

D the wrap sheet shown under the box bottom. in the first stage of theassembly, and E l the bottom portion set down on the wrap sheet D. Theends of the strip of pasteboard which forms the rim C may be lapped andcon'oined by a tongue and slot fastening 10, or t ey ma be abutted andsecured together by a paste on paper lap 11, as shown in the case of thetubular member B;

Fig. 3 is a perspective view of the lid; and Fig. 4 is an exploded viewof the 11d parts comprisinfiwrap sheet F, top G, mm H, and

15 false end For the wra sheets, thin silk or like fabric,

parchmentize paper, or a synthetic substance such as cellophane is used.Whatever the material, it must be such that when creased and pleated anddrawn taut it W111 lie flat and close against the pasteboard structure,and it must have suflicient strength to bind the asteboard parts andmaintain the shape and integrity of the bottom end membet. The bottomend member obtains its stiffness from the interfitting paperboardelements and it obtains its integrity from the wrap sheet. When the wrapsheet is made of transparent material, printing applied to W thepasteboard sides or ends will be v1s1ble through the wrap.

The containers may be made in any practicable shape; they may betriangular, rectangular, polygonal, circular, or ovate, to suit anyparticular demand, and elther one or both ends may be apertured to offera view of the contents through the flat stretched part of the wrap sheet(if it be transparent).

The structural members comprising the 4 container (other than the wrapsheet) are formed of pasteboard, paperboard, fibreboard or likematerials, 0 appropriate stiffness, having regard to the size and shapeof the box.- These'structural members comprise an end or bottom portionE. a continuous rim portion C with tangs 14 on its bottom edge forminthe bottom end member of the container. continuous side liner or tubularmember B, preferably with tangs 15 on its bottom edge, is telescopedinto the bottom end member. A false bottom or oversize stiff insertpiece A is then forced into the tubular member, expanding the same intofrictional bindi enga ment with the rim portion C.

The H for t e container may comprise an,

end G, a continuous side H with tangs 17 on its top edge, and false endK.

The paperboard pieces of which the body and the lid sides are made arenotched along one edge and creased intermediate the notches to formtangs (14, 15 and 17). These tangs are bent atright angles to setagainst the ends E and G respectively; they are embraced between therespective-ends E and G and the .5 insert pieces A and K when the partsare assembled. The rims C and H when bent to the desired shape, areconjoined at their meeting ends either by a cemented tab 18, Fig.4, overa butt joint, or alternatively by an interlocking tang and slotarrangement shown at W 10, Fig. 2, in a lapped joint. Similarly, theends of the tubular member B may be Joined together by thecemented tab11 to form a continuous side or body wall. The side liner or tubularportion B of the container body is made to extend any desired distanceabove the rim portion C.

A deep former block havin the internal plan dimensions and shape of t ebox is used to facilitate assembling of the arts. so

In building a bod the wrap s eet D is first set down on a tab esymmetrically over an aperture therein which is the same in shape andexternal plan dimensions as the box to be produced; over the wrap sheetD the bottom piece E is set down in register with the table aperture. I

Then a strip of pasteboard is notched along one edge and its ends buttedand secured together by a lap of thin tou h paper glued over the joint.The length 0 this stri is the peripheral measurement of the box si e,and the notchings are shaped and s aced appropriately to the plan shapeof the ox to rmit the strip to be bent to that shape. T us, in the caseof a cylindrical box there would be a lar e number of V-notches in closeorder, to facilitate the bending of the strip to form a ring, and in thecase of a rectangular box there would be four ri ht angle notches mospaced apart symmetrical one for each corner. Optionally the ends ofthis stri may be connected by a tongue and slot lappe joint as shown at10, but it is preferred to use the butt joint with paper lap fastenin s.When its ends are connected the strip becomes a continuous band. Thetangs 14 on the band which intervene between the notches are bentinward, and the band is 'then slipped u onto the block with these tangsinbent un er the no block. The block is then forced down, so as to drawthe wrap sheet with the bottom piece E, lying on it, down through theaperture in the table. The block corresponds in plan shape with thetable aperture and with the box plan, but the table a rture is a littlelarger t an the block to 0 er clearance for the thickness of the bandand the skirt of the wrap sheet which is pleated up over the band.

The part of the wrap sheet which is not directl over the table apertureis thus caused 'to be rawn up and pleated and pressed flat about the rimportion C which is formed by the band. The former block is nowwithdrawn, and the upstanding marginal portions operation the infoldedpart 12 of the wrap sheet is-drawn down taut and pressed fiat againstthe interior face of the rim portion C, and is embraced tightly betweenthe rim portion G and the tubular member B, and the inbent tangs 15 onthe bottom edge of the tubular member B are secreted between the insertpiece A and the bottom portion E. The insert piece A, inserted after thetubular member B has been forced into the bottom end member, struts orexpands the bottom part of the tubular member B outwardly against therim C, thus frictionally binding the tubular member B and the bottom endmember together in fixed engagement, without the use of glue, staples,or other fastening means. The wrap sheet D need not be larger than isnecessary to provide sufiicient skirt to infold over the rim C, as shownat 12, Fig. 2, so that it will be secured effectively between theinterior face of the rim C and the exterior face of the tubular portionB.

In building the lid, the same table and the same assembling block areused. The top piece G, insert piece K, and rim portion H, are identicalwith the corresponding parts in the bottom end structure. The wrapsheetcovering the bottom end member need be no larger than is necessary toleave a liberal infold 12 on the inside face of the rim C, but the lidinwrap 13 must be large enough to line the lid sides H and to underliethe insert piece K. The lid wrap sheet F is set down on the aperturedtable, the end piece G superposed on it in register with the tableaperture below, the block, carrying the rim portion H with its tangs 17infolded, is pressed down, and the whole assembl is forced through thetable aperutre, there y causing the wrap sheet to be drawn up andpleated over the exterior of the lid side. The block is now retired, andthe upstanding margin portion of the wrap sheet is infolded as at 13over the lid rim H with margin 13a: of the wrap lying on the interiorface of the top piece G. The insert piece Kis then forced into the lidso as to draw down, stretch and pleat the infolded portion at 13 overthe interior face of the rim H, embracing the edge portions 134:: of thewrap between the end G and the false end K.

In boxes according to this invention a wrap sheet of smaller area thanwas previously necessary can be used. The economy in cost A of wrapmaterial thus. efiected is of great practical importance as thatmaterial is the most costly element in the structure. What I claim as myinvention and desire to secure by Letters Patent is 1. In a container, abottom end member comprising an annular side wall having inturnedmembers at an end, a bottom piece disposed outside of and overlying saidmembers, a wrapping of flexible material covering said bottom piece andside wall and being tucked down within said side wall, a body comprisinga tubular member with inturned members at an end, said body beingtelescoped within the side walls of said bottom end member to firmlyhold said wrapping therebetween, and an insert piece inserted withinsaid tubular member to hold said tubular member firmly against saidtucked-in wrapping and against the side wall of the bottom end member.

2. A container of the character described, comprising, a continuoustubular member of fibreboard material forming a body portion of thecontainer, a bottom end member comprising a bottom portion and a sidewall portion telescoped over one end of said tubular member, saidtubular member having tang portions projecting inwardly and resting onthe inside face of said bottom end member, and a stiff oversize insertmember Within said tubular member, said insert member having itsperipheral edge pressed against the tubularmember whereby the tubularmember and the bottom end member are secured together in frictionalbinding engagement to provide a complete set up container assembledwithout the use of further securing means.

3. A container of the character described, comprising, a continuoustubular member of comparatively stifi' paperboard material forming abody portion of the container, a bottom end member comprising a bottomportion and a rim portion telescoped over one end of said tubularmember, said tubular member having tang portions projecting inwardly andresting on the inside face of said bottom end member, and an oversizestiil' insert member within said tubular member, said insert memberhaving its peripheral edge pressed against the tubular member to holdsaid tang portions seated closely against the inside face of the bottomportion of said bottom end member, said insert member also pressing thetubular member against the rim portion of said bottom end member wherebythe tubular member and the bottom end member form a complete containersecured together in firm assembly by frictional binding engagement only.

4. A container of the character described, comprising, a continuousfirst wall portion formed from relatively stiif paperboard material, aseparate second wall portion surrounding said first wall portion, saidfirst wall portion extending a substantial distance beyond said secondwall portion and having elements projecting inwardly, and meansincluding a stifl insert member pressed against said elements and alsopressed against said first wall portion to frictionally bind said' firstwall portion and, said second wall portion in firm fixed assemblywithout the use of further securing means. g

5. A container embodying a bottom end member, said bottom end memberhaving an upstandin rim portion, a continuous tubular member 0paperboard material formin a body portion of-i-Zthe container, said tubuar member having its lower end within said rim and resting on the bottomportion of said bottom end member, said tubular member having a seriesof free end tangs extending inwardly and restin on said bottomportion,and a stiff oversize insert piece forced down into said tubular memberand against said tangs so as to expand said tubular member outwardlyagainst the inner face of said rim portion and bind said tubular memberand bottom end member in fixed assembled relationship without the use ofother securing means.

6. In the production of containers, these steps which include providin acontinuous tubular member/of stiff paper card material with anendseriesof longitudinal foldable tangs, inserting the lower open end of saidtubular member into a separate exterior bottom end member, said bottomend member having a bottom ortion and an upstanding annular rim portion,said tangs being bent inwardly into the open end of the tubular memberand positioned to rest on the end portion of the bottom end member, andwith the lower end of the tubular member snugly surrounded by said rimportion, inserting a still oversize insert iece through the open upperend of said tu ular member and forcing the same down into said tubularmember tightly against said tangs, and with the peripheral edge of theinsert piece tightly engaging the surrounding tubular member so as toexpand the same against the surrounding rim portion and frictionallybind said tubular member and bottom end member together in fixedassembled relationship without the use of further securing means.

In testimony whereof I afiix my signature.

JOHN ERNEST PAGE.

